//Events 事件处理模块

const MyEmitter=require("events");

const myEmitter=new MyEmitter();

//事件绑定监听器处理
myEmitter.on("event_name",function(a,b){
    console.log(a,b,this,this===myEmitter);
});

//事件发射器
myEmitter.emit("event_name","a","b");

//箭头函数的影响
const myEmitter2=new MyEmitter();
myEmitter2.on("event_name",(a,b)=>{
    console.log(a,b,this);
});

myEmitter2.emit("event_name","a","b");